Ice-making machinery.



No. 659,6!0. Patented oat. 9, 1900-.

T. SHIPLEY. 4

ICE MAKING MACHINERY. (Application filed Sept. 5. 1900.)

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EUNiTED STATES PATE T GFFIcE.

THOMAS SHIPLEY, OF YORK, PENNSYLVANIA.

ICE-MAKING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 659,610, dated October 9, 1900.

Application filed September 8, 1900. Serial No. 29,365. (No model.)

0 at whom it may concern.-

Be it known that I, THOMAS SHIPLEY, a citizen of the United States, residing at York, in the county of York and State of Pennsyl- Vania, have invented a certain new and useful Improvement in Ice-Making Machinery, of which the following is a specification.

My invention relates to that class of icemaking machines in which the ammonia is kept in circulation in a pipe-circuit connected with a condenser, to which the ammonia after having done its work is returned by means of one or more compressors. It has more particular reference to the means for preliminarily cooling the water before it is admitted to that portion of the apparatus in which it is frozen, the object being to obtain a compact efiicient cooling system which will act regularly and with uniformity upon the water.

To this end my invention consists of the devices and combinations which will first be described in connection with the accompanying drawing and will then be more particularly pointed out in the claim.

The drawing is a diagrammatic representation of an apparatus embodying my invention.

The particular apparatus illustrated in the drawing is an ice-making plant operating on what is known as the can system; but the invention is applicable to other systems as Well-such as the plate system,the block system, &c.

A is the condenser for the ammonia or other refrigerant.

B B are two single acting compressors driven in the usual way.

0 is a freezing-tank of the can type containing the usual freezing appliances.

From the outer end of the condenser there leads a pipe 1 into a reservoir X, at which point it has a controlling-valve 00. From the reservoir X the refrigerant is conducted by pipe 2 to the freezing appliances in tank 0, through which it passes in the customary way, and thence out through pipe 3 back to the compressors B B,by which it is returned to the condenser through pipes 4t 5 6. Pipe 2 is provided with a reducing-valve y, by which the back pressure in the freezing part of the system is regulated. The pipe system thus far traced is what may be called the freezing-pipe circuit.

D is the tank for holding the preliminarilycooled water, which is conveyed from that tank to the freezingtank C by a pipe 19. The supply of water is drawn through a pipe 01 from any usual or suitable source and after passing through the cooling system is stored in tank D.

The cooling of the water is effected not directly by the ammonia or other refrigerant, but indirectly through the instru mentality of brine, which is first cooled by the refrigerant and then in turn cools the water. The refrigerant which acts upon the brine is not the return gas from the freezing-tank, but is. supplied independently of the latter from the condenser, being taken from the reservoir X at any desired pressure. In this way I am enabled to cool the Water efficiently and uniformly without danger of prematurely freezing it. What may be called the coolingpipe circuit is as follows: from the outlet end of the condenser A through pipe 1 to reservoir X, thence through a pipe 7, provided with a reducing-valve z, to and through the outer space or jacket of a jacketed coil m, thence through a branch pipe 8 to return-pipe 3, whence it goes to the compressors and back to the condenser. The brine-circuit includes a pump E and pipe connections 9 10 11, by means of which the brine is caused to circulate first through the inner pipe of the jacketed brine-cooling coil m, Where it is cooled by the action of the refrigerant, and thence by means of the pump E through the outer pipe or jacket of a jacketed coil Z, where it in turn cools the water, which from pipe at circulates through the inner pipe of coil Z and thence passes thoroughly cooled into the storage-tank D. Under this arrangement it will be noted that the return-pipe 3 is common to both systems-the cooling system and the freezing system. The pipe 3 is, in fact, the suction-pipe upon which both of the compressors B B draw, each of the latter working upon or drawing from both systems.

In lieu of two single-acting compressors one double-acting compressor might be used.

Having thus described my invention, what I claim herein as new, and desire to secure by Letters Patent, is-' In machinery for making ice, the combination'substantially as hereinbefore set forth of the following elements: a refrigerant-conpliances through which the water circulates denser; compressors; freezing appliances; and is preliminarily cooled by the brine, bebrine-cooling appliances; two pipe-lines fromfore entering the freezing appliances. the condenser, the one to the freezing system In testimony whereof I have hereunto set 5 the other to the brine-cooling system and my hand this 4th day of September, 1900.' 15

means for regulating the pressure in each line; a return pipe-line common to both sys- THOMAS SIIIPLEY' tems and to the compressors; and a brine-cir- Witnesses:

cuit including means for causing the circu- F. M. DICK, 1o lation of brine therein, and water-cooling ap- A. B. STUOHLER. 

